package com.java2207.group1.controller;

import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.read.builder.ExcelReaderBuilder;
import com.alibaba.excel.read.builder.ExcelReaderSheetBuilder;
import com.alibaba.excel.write.builder.ExcelWriterBuilder;
import com.alibaba.excel.write.builder.ExcelWriterSheetBuilder;
import com.java2207.group1.bo.DischargeBo;
import com.java2207.group1.common.LayuiPageVo;
import com.java2207.group1.common.R;
import com.java2207.group1.listener.DischargeBoListener;
import com.java2207.group1.pojo.Discharge;
import com.java2207.group1.service.DischargeService;
import com.java2207.group1.vo.discharge.BarVo;
import com.java2207.group1.vo.discharge.PieVo;
import org.apache.commons.io.FileUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;

/**
 * Lenovo 2022/7/25 16:18
 */
@RestController
@RequestMapping("/discharge")
public class DischargeController {
    @Autowired
    private DischargeService dischargeService;


    @RequestMapping("/dischargeList")
    public LayuiPageVo<Discharge> dischargePage(@RequestParam Map<String, Object> params) {

        return dischargeService.dischargePage(params);
    }

    @RequestMapping("/dischargeUpdate")
    public R dischargeUpdate(Discharge discharge) {
        int r = dischargeService.dischargeUpdate(discharge);
        if (r == 1) {
            return R.ok();
        } else {
            return R.error();
        }
    }

    @RequestMapping("/dischargeDelete")
    public R dischargeDelete(Integer id) {
        int r = dischargeService.dischargeDelete(id);
        if (r == 1) {
            return R.ok();
        } else {
            return R.error();
        }
    }

    @RequestMapping("/dischargeAdd")
    public R dischargeAdd(Discharge discharge) {
        int r = dischargeService.dischargeAdd(discharge);
        if (r == 1) {
            return R.ok();
        } else {
            return R.error();
        }
    }

    @RequestMapping("/dischargeDeleteByIds")
    public R dischargeDeleteByIdS(String ids) {
        int r = dischargeService.dischargeDeleteByIds(ids);
        if (r > 0) {
            return R.ok();
        } else {
            return R.error();
        }

    }

    @RequestMapping("/echartBar")
    public R echartBar() {
        List<BarVo> barVos = dischargeService.setBarDate();
        return R.ok().data("sexBar", barVos);
    }

    @RequestMapping("/echartPie")
    public R echartPie() {
        List<PieVo> pieVos = dischargeService.setPieDate();
        return R.ok().data("sexPie", pieVos);
    }
    @Autowired
    private DischargeBoListener dischargeBoListener;

    // 下载 excel 模板
    @RequestMapping("/templateDownload")
    public void templateDownload(HttpServletRequest request, HttpServletResponse response) throws IOException {
        //下载excel 的 响应头
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        //读取服务器上的模板文件 写到浏览器
        String realPath = request.getServletContext().getRealPath("/template/出院登记表模板.xlsx");

        File file = new File(realPath);

        byte[] bytes = FileUtils.readFileToByteArray(file);
        // 下载的文件名 是中文  要进行转码  要不然会出现乱码
        String filename = URLEncoder.encode("出院登记表模板", "utf-8");

        // 告诉浏览器  下载文件
        response.setHeader("Content-Disposition","attachment;filename="+filename+".xlsx");

        //得到指向浏览器的输出流  向浏览器写输出
        ServletOutputStream outputStream = response.getOutputStream();

        outputStream.write(bytes);

        outputStream.close();

    }


    //导出列表数据     把满足条件的数据 查询出来  写到excel 中  ，把excel 写到浏览器
    @RequestMapping("/export")
    public void export(@RequestParam Map<String, Object> params, HttpServletResponse response) throws IOException {
        //下载excel 的 响应数据格式
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        // 下载的文件名 是中文  要进行转码  要不然会出现乱码
        String filename = URLEncoder.encode("出院信息导出", "utf-8");

        // 告诉浏览器  下载文件
        response.setHeader("Content-Disposition","attachment;filename="+filename+".xlsx");

        //得到指向浏览器的输出流  向浏览器写输出
        ServletOutputStream outputStream = response.getOutputStream();

        ExcelWriterBuilder write = EasyExcel.write(outputStream, DischargeBo.class);

        ExcelWriterSheetBuilder sheet = write.sheet();
        //准备满足条件的集合数据
        List<DischargeBo> dischargeBos =  dischargeService.dischargeExcelPage(params);
        // 把这个集合数据 写到 输出流
        sheet.doWrite(dischargeBos);
    }


    // 读取excel 文件数据 存到数据库中
    @RequestMapping("/import")
    public R importExcel(MultipartFile file) throws IOException {
        // 避免预检请求报错
        if(file!=null){
            /**
             * 参数1  文件流
             * 参数2  读取到的数据封装到哪个数据类型中
             * 参数3  监听器  每读取一行数据 就会调用监听器中的 invoke  方法
             * */
            ExcelReaderBuilder read = EasyExcel.read(file.getInputStream(), DischargeBo.class, dischargeBoListener);
            // 得到 sheet 对象
            ExcelReaderSheetBuilder sheet = read.sheet();
            // 读取sheet
            sheet.doRead();
        }
        return R.ok();
    }


}
